I don't know this one, but it seems to be based on Geany, which is a very nice compact but scalable editor.

The question has rather to be, what kind keyboard do you intend to use?

Unless you are dragging an external keyboard with you, you'll need to figure out how best to input CTRL sequences.

I'm personally using Emacs inside Termux with a standard touch keyboard supporting Swype-like input°. (at least half of my posts here are made from mobile with swipe typing)

Pressing the volume button up and down gives me ALT and CTRL sequences. Still not perfect, I might activate evil-mode in the future or try to activate "Doom Emacs" or "Space Emacs" which have a vim-philosophy.

Support for swiping in Termux is a bit cumbersome, you need to switch the keyboard mode to be able to use it and the text is only introduced after switching back.

°) the setting is called Glide-Typing in my Android. I'm using "Swype" here like "Nutella", it's actually a brand's name representative for a whole class of products.